Tube frame spool



Och 4, 1932. w. may 1,880,400

TUBE FRAME SPOOL Filed April 10. 1931 IN V EN TOR BY W 2? I I 5 150- M WW ATTORNEY.

Patented Oct. 4, 1932 UNITED STATES WALTER ZBIXBY, 0F BOSTON, MASSACHUSETTS :.TUBE FRAME sroor.

Application filed April 10,

For weaving of carpets of more than a single breadth, it is the practice to provlde the tube frame with sectional spools com prising two or more single breadth, axially arranged yarn spools. This involves the use of end bearing'bracketsat each end of the tube frame and one or more intermediate spool bearing brackets, according to the number of spool sections used to secure the desired width of carpet. To rotatably support adjacent ends of the spool sections to permit unwinding of the yarn drawn through the tuft tubes, intermediate bearing brackets are "used which are provided with bearings of suflicient axial length to accommodate two abutting spool journals. This arrangement necessitates a considerable 1. spacing apart of adjacent ends of the spool sections and in consequence thereof those tufts, or yarn elements, unwinding from that portion of the spool next to each inner spool head must take a diagonalcourse across the peripheral edge of the end head and across the thin edge of theintake ends of the tuft tubes, which results in chaffing or scraping the yarn beside producing an excessive tension on those particular yarn elements. Of course, the tuft tubes must be arranged side by side from one end to the other of the row of tuft tubes in order that the narrow delivery ends of the tubes may pass between the appropriate warp threads in the loom, so that with constructions used heretofore this chafing and scraping of the yarn elements has been unavoidable.

One feature of the present invention comprises a construction and arrangement by which the separation or spacing apartof the adjacent spool ends is avoided and the yarn elements next to the respective end heads are permitted a practically straight line of travel directly into their subtending tuft tubes withoutthe objectionable scraping and chafing action above noted.

1931. Serial No. 529,126.

This and other features of the invention will be described in the following specification and will be defined in the claims hereto annexed. V

In the accompanying drawing I have illustrated a specific construction and arrange ment. embodying the principles of this in vention, in which Fig: 1 is a front elevation, partly in cell:

improvements.

Fig. 2 is an end elevation taken on the,

plane X X of Fig. l. I

Fig. 3 is a detail view showingiin central tral section, of a tube frame containing my cross section; a modified form 'of-the yarn spool. r I Referring nowto the drawing, the tube frame, generally speaking, comprisesthe longitudinal carrier bar 1, to which are se-.

cured in any suitable manner a continuous row of individual tuft tubes 2 through whose upper end the individualyarn or tuft elements are drawn for delivery into the fabric at the lower end, inaccordance with the usual practice. The opposite endsof the carrier bar are provided with the usual endbrackets 3 formed to have releasable suspension en gagement with the carrier chains of the loom and provided with aispool bearing arm or bracket 4 for receiving and supporting-the opposite end journals ofthe yarn spool. a

The yarn spool in this case comprises two axially aligned tubular barrels 6, to which are integrally secured flanged end heads 7,

whose central areas-are punched out to'provide a circular opening for the'insertion of the end of the barrel 6. When so inserted,

the end head is welded directly tothe end portion of the barrel tomake a substantially integral construction.

To provide a journal bearing to support the outer end'of the spool in; the end bearing bracket 4, I provide a pressed metal hollow, or cup-like, head 8 whose peripheral inner end is dimensioned to fit'snugly inside the open end of the barrel 6. A disc 9, preferably having a peripheral flange, is inserted into the inner end' of the hollow head 8 and is soldered or welded thereto so as to make a solid head, whose opposite ends are provided with axially aligned perforations to form a bearing for a slidable pintle or pin which is provided, preferably, with a stop collar 10 to limit its outward movement and is surrounded by a coiled thrust spring 11, which normally presses the pintle yieldingly outward while allowing it to be pushed in for the purpose of removing it from its bearing in the bearing bracket 4. It will be understood that the pintle and its thrust spring are inserted between the two members of the hollow head before the two members 8 and 9 are united together. 7

The inner ends of each spool section carry disc-like heads 12, which are provided with central apertures to allow them to befitted snugly over the ends of their respective barrels 6 to which they are securely fastened by welding. It will be noted that these discs or inner end heads 12 are placed at the extreme end of the barrel and that the barrel ends, in-

cluding the heads, are arranged to permitv contact with each other so that no space intervenes between the two adjacent spool ends and their heads.

In order to'rotatably support the inner ends of the spools, a peripheral intermediate bearing bracket 15 is provided which is secured to the top of the carrier bar 1 in anysuitable manner and which is dimensioned to fit around substantially more than half the periphery of the two adjacent end heads 12. Agap' is left in' the peripheral bearing and supporting member 15 fully sufiicient to allow the yarn unwinding from the rotating spool to pass down into the tuft tubes, whether the spool is full, or nearly empty, without necessitating its contact withfthe peripheral bearin member 15.. The peripheral bearing mem 'er may, if desired, be reenforced for a substantial part of its'length, as it is usually made of pressed metal, :b means of a reenforcing. strip 15 which stiffens and strengthens it.

To secure uniform rotation of all sections of the spool in the delivery of the yarn, I provide interlocking coupling members 16 which are of annular form with projecting teeth alternating with intervening recesses, so that the teeth of one may be received by the recesses of the other. It will be observed that the teeth project beyond the end of one are subjected in ordieach' barrel, the radial flange of which is spot .weldeddirectly. to the face of the disc or .head 12. This provides a connecting joint which by welding constitutes, in effect, an integral construction but without involving anysubstantialspa'cing apart of the heads,

which would be necessary if an interposed bearing were used between the heads, Consequently, approximatelythe same advantage is secured with this construction as with the construction shown in Fig. 1.

. What I claim is: g I

1.. In a tube frame for axminsterlooms, the combination of a longitudinal carrier bar, spool bearing brackets secured thereto at opposite ends of the bar for rotatably support ing the; outer end journals of a sectional spool, and spool bearing means secured to the bar intermediate of theirbearings, said intermediate bearing means being formed to partly encircle adjacent end heads of the spool sections to form. peripheral bearings permitting adjacent end heads of the "spool sections to lie in lateral Contact with each otherv without requiring a spacing interval between. i I i 2. In a tube frame for axminster looms, the combination of a longitudinal carrier bar, spool bearing brackets secured to the opposite ends thereof for rotatably supporting the in ner end journals of a sectional spool, intermediate supporting bearing means engaging y and rotatably supporting the peripheries of the adjacent supporting end heads of the spool sections.

3. In a tube framefor axminster looms',the combination of a carrier bar and bearing brackets secured thereto, a sectional spool whose outer ends have supporting journals mounted in said end bearing brackets, the adjacent end heads of the spool sections being rotatably mounted in a common bearing member dimensioned to embrace the peripheries of the adjacent spool heads, and coupling means secured in the adjacent end portions ofeach spool section for coupling together the! spool sections and thereby insure equal rotation of all'the sections. i 4. In a tube frame for axminster looms, the combination of a carrier, bar and-bearing brackets secured thereto, a sectional spool whose outer ends have supporting journals mounted in said end bearingbrackets, the adjacent end heads of the spoolsections being rotatably mounted .in a common bearing member dimensioned toembra'ce the peripheries of the adjacent spool'heads, and coupling means secured in the adjacent end portions of each spool section for coupling together the spool sections and thereby insure equal rotation of all the sections, each of said coupling members projecting beyond the end head of the section in which it is secured and into the adjacent end of the next spool section.

5. A spool for a tube frame embracing in its construction, a cylindrical barrel end heads comprising centrally apertured discs secured to opposite ends of said barrel, and a journal structure for rotatably supporting said spool embracin in its construction a hollow cup-like mem er whose. diameter at its inner end is dimensioned to fit the inside of the end of the barrel and be integrally united therewith, a supplemental disc inserted in the inner end of said cup-like member and securely fastened therein, both said inserted disc and said outer end of the cup-like member being provided with axial apertures forming coaxial pintle supporting and guiding bearings, a slidable pintle mounted in said axial apertures and normally spring pressed outwardly while being capable of inward movement to release it from its supporting bearing.

6. In a tube frame, the combination with a carrier bar, a row of tuft-receiving and delivering tubes arranged side by side along the front of said bar, a sectional yarn spool rotatably mounted in supporting bearings carried by said carrier bar, the adjacent ends heads of said spool sections being arranged to have face to face contact with each other and in registry with two subtending adjacent tuft tubes arranged in contact with each other, thereby permitting delivery of yarn from the spool to said adjacent tuft tubes Without angular deviation of the yarn.

7. An axminster tube frame embracing in its construction a carrier bar and spool bearing brackets secured thereto, coaxially aligned spool members having outwardly projecting journals rotatably mounted in outer end bearing brackets, the adjacent end heads of the spool members being rotatably mounted in a bearing member common to both dimensioned to partly surround the pe ripheries of both adjacent spool heads, and means projecting inwardly beyond each of the adjacent spool heads for intercoupling the spool sections rotatably, the coupling means ofeach member being extended beyond the end head thereof into the adjacent end of the other spool member.

In witness whereof, I have subscribed the 1 above specification.

WALTER BIXBY. 

